Table 2

Pearson correlations of dietary vitamin D and calcium with measures of insulin and glucose metabolism

Vitamin D

Calcium

All

AA

EA

All

AA

EA

Fasting glucose

-0.03

-0.13

-0.01

-0.001

-0.07

-0.12

Fasting insulin

-0.11*

-0.20^†

 0.01

-0.08

-0.10

-0.03

HOMA-IR

-0.11*

-0.21^†

 0.01

-0.08

-0.10

-0.05

S_I

 0.15^†

 0.17*

 0.06

 0.26^‡

 0.15

 0.13

Pearson correlation coefficient (r) is reported. Abbreviations: FSIGT, frequently-sampled intravenous glucose tolerance test; AA, African American; EA, European American; HOMA-IR, homeostasis model assessment of insulin resistance; S_I, insulin sensitivity index. Statistical analyses were performed on log₁₀-transformed data for S_I, vitamin D, calcium, HOMA-IR, fasting glucose, and fasting insulin.

*P = 0.05-0.10

^†P < 0.05

^‡P < 0.001

Alvarez et al. Nutrition & Metabolism 2010 7:28   doi:10.1186/1743-7075-7-28